module Nostr
  class Client
    include EventEmitter

    def initialize: -> void
    def connect: (Relay relay) -> Thread
    def subscribe: (?subscription_id: String, ?filter: Filter) -> Subscription
    def unsubscribe: (String subscription_id) -> void
    def publish: (Event event) -> untyped

    private

    attr_reader subscriptions: Hash[String, Subscription]
    attr_reader parent_to_child_channel: EventMachine::Channel
    attr_reader child_to_parent_channel: EventMachine::Channel

    def execute_within_an_em_thread: { -> void } -> Thread
    def initialize_channels: -> void
  end
end